Can I use my Windows 7 product key on Windows 10?

[Windows Central Question]

Hello,

I want to work right away with Windows 10 Insider Preview on my PC, but my question is will my Windows 7 product key will work when i'm gonna upgrade Windows 10 Insider Preview to Windows 10 (29july).

 

[RumoredNow]

If the key matches a valid install on the current PC... Yes you can.